This course compiles the OpenAI Build Hour series, providing developers and AI enthusiasts with hands-on experience building AI applications using GPT-5, Codex, and OpenAI’s agent tools. Each session walks learners through practical implementations, demonstrating how to create intelligent apps, fine-tune agents, and leverage AI for real-world problem-solving.

Learners begin with building apps in ChatGPT, exploring agent memory patterns, agent reinforcement fine-tuning (RFT), and the AgentKit framework. The series then covers using the Responses API, Codex for programming assistance, built-in AI tools, and creating voice-enabled agents. Detailed tutorials guide learners through image generation, agentic tool calling, and GPT-5 advanced applications.

Emphasis is placed on hands-on learning, practical workflows, and integrating multiple OpenAI tools to create scalable AI solutions. By the end of the course, learners will have the skills to build custom AI agents, generate content, automate tasks, and utilize GPT-5 and Codex effectively in various applications. This course is ideal for developers, AI engineers, and enthusiasts seeking real-world AI experience with OpenAI technologies.